MCR03EZPFX1181 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX1181 is a 1.18 kOhms ±1% 0.1W thick film chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This component is rated for automotive applications under AEC-Q200 standard with an operating temperature range of -55°C to 155°C. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Resistance	1.18 kOhms
Tolerance	±1%
Power Rating	0.1W (1/10W)
Package / Case	0603 (1608 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MCR03EZPFX1181 is determined by strict equivalence across the following parameters: resistance value (1.18 kOhms), tolerance (±1%), power rating (0.1W), package type (0603), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and compliance certifications (ROHS3, REACH Unaffected, EAR99).

All substitute parts listed maintain identical electrical specifications and package dimensions. Variations in physical dimensions (length, width, height) within the 0603 package specification and differences in special features (automotive AEC-Q200 rating, anti-sulfur coating, moisture resistance) do not affect functional interchangeability for standard circuit applications.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Features	Product Status
MCR03EZPFX1181	Rohm Semiconductor	1.18 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Discontinued
MCR03ERTF1181	Rohm Semiconductor	1.18 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	—	Discontinued
TRR03EZPF1181	Rohm Semiconductor	1.18 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Anti-Sulfur	Obsolete
CRCW06031K18FKEA	Vishay Dale	1.18 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active
ERJ-3EKF1181V	Panasonic Electronic Components	1.18 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active
RMCF0603FT1K18	Stackpole Electronics Inc	1.18 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active
CR0603-FX-1181ELF	Bourns Inc.	1.18 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active
RC0603FR-071K18L	YAGEO	1.18 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active

Engineering Selection Recommendations

For applications requiring automotive qualification, CRCW06031K18FKEA (Vishay Dale), ERJ-3EKF1181V (Panasonic), and RMCF0603FT1K18 (Stackpole) are preferred substitutes as they maintain active product status and carry AEC-Q200 certification identical to the original MCR03EZPFX1181.

For general-purpose applications where automotive qualification is not required, RC0603FR-071K18L (YAGEO) and CR0603-FX-1181ELF (Bourns) provide functionally equivalent alternatives with active availability and moisture-resistant characteristics.

MCR03ERTF1181 and TRR03EZPF1181 from Rohm Semiconductor are functionally equivalent but carry discontinued or obsolete status, limiting their suitability for new designs despite technical compatibility.

All listed substitutes comply with ROHS3, REACH Unaffected, and EAR99 classifications matching the original part.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts interchangeably with MCR03EZPFX1181?

A: Yes. All listed parts share identical electrical specifications (1.18 kΩ, ±1% tolerance, 0.1W power rating, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range) and 0603 package type. Physical dimension variations within 0603 specification do not affect circuit performance.

Q: What is the difference between parts with "Automotive AEC-Q200" and those without this designation?

A: AEC-Q200 certification indicates the part meets automotive industry reliability and qualification standards. Parts with this rating (CRCW06031K18FKEA, ERJ-3EKF1181V, RMCF0603FT1K18) are suitable for automotive applications. Parts without this designation (CR0603-FX-1181ELF, RC0603FR-071K18L) are suitable for general-purpose applications.

Q: Why are some parts listed as "Discontinued" or "Obsolete"?

A: MCR03ERTF1181 and TRR03EZPF1181 are no longer in active production. While electrically equivalent, their limited availability makes them unsuitable for new designs or ongoing production requiring reliable supply.

Q: Does the "Anti-Sulfur" or "Moisture Resistant" feature affect substitution?

A: These features provide additional environmental protection but do not alter the core electrical specifications. They represent enhancements that do not prevent functional substitution. Selection should be based on application environment requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the original MCR03EZPFX1181 regulatory classification.

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